CN201391646Y - Safe explosion-proof plunger valve - Google Patents
Safe explosion-proof plunger valve Download PDFInfo
- Publication number
- CN201391646Y CN201391646Y CN200920143782U CN200920143782U CN201391646Y CN 201391646 Y CN201391646 Y CN 201391646Y CN 200920143782 U CN200920143782 U CN 200920143782U CN 200920143782 U CN200920143782 U CN 200920143782U CN 201391646 Y CN201391646 Y CN 201391646Y
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- China
- Prior art keywords
- valve
- cylindrical shell
- cylinder body
- plunger
- section
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- Expired - Fee Related
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Abstract
The utility model discloses a safe explosion-proof plunger valve for use under special conditions, which comprises a valve body, a valve cap, a valve rod and a plunger piston, wherein, the valve rod is provided with an external thread section engaged with the internal thread at the top end of the valve cap, a handwheel is fixedly mounted at the top end of the valve rod, the plunger piston which is horizontally arranged in the inner chamber of the valve body is fixedly connected to the lower end of the valve rod, an opening is formed on the side wall of the feeding side of the valve body, a cylinder body is engaged with the inner wall of the opening, a vertical air inlet is formed at the lower end of the cylinder body and is communicated with the inner chamber of the valve body, the upper end of the cylinder body is opened, a step section is formed on the inner wall of the cylinder body above the air inlet of the cylinder body, a cone is supported on the upper inner edge of the step section, a pressure relief port is formed on the side wall of the cylinder body above the step section, a spring is connected to the upper end of the cone, a compress block which is in slide fit with the inner wall of the cylinder body is connected to the upper end of the spring, a compress lid is in threaded connection with the outer side wall of the cylinder body, and the compress block is propped by the spring against the lower end surface of the compress lid. When liquids and gases in the valve are in excess of the maximum set pressure, the pressure relief port is enabled to be communicated with the inner chamber of the valve body, thereby effectively preventing pipeline explosion caused by rising pressure.
Description
Technical field
The utility model specifically is a kind of special operation condition safety anti-explosive plunger valve.
Background technique
Along with fast development of national economy, the people's culture and living standard have all obtained huge raising, and people also more and more pay attention to safety consciousness simultaneously.Medium transport pipeline in the industries such as the liquefaction separation of petroleum products, petroleum gas, rock gas and liquid oxygen and chemical industry generating, coal gas conveying, accumulate in the gasification of the endoceliac liquid of valve and when producing high pressure when running into, perhaps line clogging and raise suddenly owing to misoperation causes liquid, gas pressure in the conveyance conduit that valve closing causes has brought huge hidden danger for conveyance conduit safety.
Summary of the invention
The purpose of this utility model provides a kind of special operation condition safety anti-explosive plunger valve, when the liquid in the valve, when gas has surpassed maximum set pressure, pressure relief opening and body cavity conducting have effectively prevented owing to the raise accident of the pipe explosion cause of pressure takes place.
The technical solution of the utility model is as follows:
A kind of special operation condition safety anti-explosive plunger valve, comprise valve body, valve gap, valve rod, plunger, valve rod has the screw-internal thread fit on external thread section and valve gap top, the top of valve rod is installed with handwheel, the lower end of valve rod is fixedly connected with horizontal and plunger body cavity, on the sidewall of described valve body feed side perforate is arranged, be combined with cylindrical shell on the inwall of perforate, the cylindrical shell lower end has vertical suction port and communicates with body cavity, the cylindrical shell upper end is opened wide, the cylinder inboard wall of the suction port top of cylindrical shell has the step section, and the last inside edge jacking of step section has cone, has pressure relief opening on the sidewall of the overhead cylinder of step section, the upper end of cone is connected with spring, the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, and the outer side wall scyewed joint has friction top on the cylindrical shell, and spring holds out against compact heap on the lower end surface of friction top.
Described friction top below with cylindrical shell outer side wall scyewed joint has leaned locking nut.
There is the section of stretching out described cylindrical shell lower end, and the perforate screw-thread fit on outside thread and the body wall is arranged on the sidewall of the section of stretching out, and has vertical suction port in the section of stretching out and communicates with body cavity, is separated with sealing gasket between the lower end surface of cylindrical shell and the outer side of valve body.
Liquid in the utility model valve body, when gas has surpassed maximum set pressure, pressure relief opening and body cavity conducting are discharged pressure relief opening with the liquid in the body cavity, gas, have effectively prevented because the accident generation of the pipe explosion that the pressure rising causes.
Pressure maximum size during the utility model pressure release can be set by screwing friction top.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model inner barrel part mounting structure schematic representation.
Embodiment
Referring to Fig. 1, Fig. 2, a kind of special operation condition safety anti-explosive plunger valve, comprise valve body 1, valve gap 2, valve rod 3, plunger 4, valve rod 3 has the screw-internal thread fit on external thread section and valve gap top, the top of valve rod is installed with handwheel, the lower end of valve rod is fixedly connected with horizontal and plunger 4 body cavity, on the sidewall of valve body feed side perforate is arranged, be combined with cylindrical shell 5 on the inwall of perforate, cylindrical shell 5 lower ends are the section of stretching out, perforate screw-thread fit on outside thread and the body wall is arranged on the sidewall of the section of stretching out, having vertical suction port 6 in the section of stretching out communicates with body cavity, be separated with sealing gasket between the lower end surface of cylindrical shell and the outer side of valve body, the tube upper end is opened wide, the cylinder inboard wall of the suction port top of cylindrical shell has the step section, the last inside edge jacking of step section has cone 7, have pressure relief opening 8 on the sidewall of the overhead cylinder of step section, the upper end of cone is connected with spring 9, the upper end of spring 9 is connected with the compact heap that is slidingly matched with cylinder inboard wall, the outer side wall scyewed joint has friction top 10 on the cylindrical shell, spring 9 holds out against compact heap on the lower end surface of friction top 10, has leaned locking nut 11 with the friction top of cylindrical shell outer side wall scyewed joint below.
Claims (3)
1, a kind of special operation condition safety anti-explosive plunger valve, comprise valve body, valve gap, valve rod, plunger, valve rod has the screw-internal thread fit on external thread section and valve gap top, the top of valve rod is installed with handwheel, the lower end of valve rod is fixedly connected with the plunger that is horizontally placed on body cavity, it is characterized in that: on the sidewall of described valve body feed side perforate is arranged, be combined with cylindrical shell on the inwall of perforate, the cylindrical shell lower end has vertical suction port and communicates with body cavity, the cylindrical shell upper end is opened wide, the cylinder inboard wall of the suction port top of cylindrical shell has the step section, the last inside edge jacking of step section has cone, have pressure relief opening on the sidewall of the overhead cylinder of step section, the upper end of cone is connected with spring, the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, and the outer side wall scyewed joint has friction top on the cylindrical shell, and spring holds out against compact heap on the lower end surface of friction top.
2, a kind of special operation condition safety anti-explosive plunger valve according to claim 1 is characterized in that: described friction top below with cylindrical shell outer side wall scyewed joint has leaned locking nut.
3, a kind of special operation condition safety anti-explosive plunger valve according to claim 1, it is characterized in that: there is the section of stretching out described cylindrical shell lower end, perforate screw-thread fit on outside thread and the body wall is arranged on the sidewall of the section of stretching out, have vertical suction port in the section of stretching out and communicate, be separated with sealing gasket between the lower end surface of cylindrical shell and the outer side of valve body with body cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920143782U CN201391646Y (en) | 2009-04-09 | 2009-04-09 | Safe explosion-proof plunger valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920143782U CN201391646Y (en) | 2009-04-09 | 2009-04-09 | Safe explosion-proof plunger valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391646Y true CN201391646Y (en) | 2010-01-27 |
Family
ID=41598471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920143782U Expired - Fee Related CN201391646Y (en) | 2009-04-09 | 2009-04-09 | Safe explosion-proof plunger valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391646Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104709A (en) * | 2012-11-10 | 2013-05-15 | 无锡裕力机械有限公司 | Blowoff valve of high-pressure spray pipe |
-
2009
- 2009-04-09 CN CN200920143782U patent/CN201391646Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104709A (en) * | 2012-11-10 | 2013-05-15 | 无锡裕力机械有限公司 | Blowoff valve of high-pressure spray pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |